I look at their rhetoric as a "religious" thing. Beliefs Feeeeeeeeeeeelings that do not require logical proof or material evidence.
Reid, Pelosi, Obama, et al are all Isflamists. What they say is flam. Obama is a Grand Wallah of Isflam second only to Bill Clinton.
Obama ( and other lib office holders) say "I am going to...[lower your taxes][improve our schools][stop crime][fill in your particular need]," and people say "Yay, isn't he wonderful!"
When a city stays crime ridden and students score pitifully low in their proficiency tests, and taxes go higher, decade after decade, the voters never blame the democrat office holders, because he "wanted to ...." (translated: his heart was in the right place.)
Their brains operate on a level of wishing for things to happen. When wishes do not come true, the fault is always outside of their control. And so the cycle of wishing continues with more "I'm going to...." speeches